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u-boot/arch/arm/dts/imx8mm-venice-gw73xx-0x-u-boot.dtsi
Tim Harvey d5cc234154 arm: dts: imx8m*-venice: add gpio hog support
Add gpio hog support for board-specific gpio lines:
- put hogs in u-boot.dtsi so as to keep the regular dts files
  in sync with the kernel. The hogs will not be put in the kernel
  as that makes them un-usable by userspace as well as
  re-initializes them to dt defaults overriding changes which may
  have been done by bootloader commands.
- specify gpio names and initial config
- enable GPIO_HOG

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Acked-by: Peng Fan <peng.fan@nxp.com>
2022-04-21 12:44:23 +02:00

86 lines
1.2 KiB
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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2021 Gateworks Corporation
*/
#include "imx8mm-venice-gw700x-u-boot.dtsi"
&gpio1 {
rs485_term {
gpio-hog;
output-low;
gpios = <0 GPIO_ACTIVE_HIGH>;
line-name = "rs485_term";
};
mipi_gpio4 {
gpio-hog;
input;
gpios = <1 GPIO_ACTIVE_HIGH>;
line-name = "mipi_gpio4";
};
pci_usb_sel {
gpio-hog;
output-low;
gpios = <6 GPIO_ACTIVE_HIGH>;
line-name = "pci_usb_sel";
};
dio_0 {
gpio-hog;
input;
gpios = <7 GPIO_ACTIVE_HIGH>;
line-name = "dio0";
};
dio_1 {
gpio-hog;
input;
gpios = <9 GPIO_ACTIVE_HIGH>;
line-name = "dio1";
};
};
&gpio4 {
rs485_en {
gpio-hog;
output-low;
gpios = <0 GPIO_ACTIVE_HIGH>;
line-name = "rs485_en";
};
mipi_gpio3 {
gpio-hog;
input;
gpios = <1 GPIO_ACTIVE_HIGH>;
line-name = "mipi_gpio3";
};
rs485_half {
gpio-hog;
output-low;
gpios = <2 GPIO_ACTIVE_HIGH>;
line-name = "rs485_hd";
};
mipi_gpio2 {
gpio-hog;
input;
gpios = <3 GPIO_ACTIVE_HIGH>;
line-name = "mipi_gpio2";
};
mipi_gpio1 {
gpio-hog;
input;
gpios = <4 GPIO_ACTIVE_HIGH>;
line-name = "mipi_gpio1";
};
pci_wdis {
gpio-hog;
output-high;
gpios = <7 GPIO_ACTIVE_HIGH>;
line-name = "pci_wdis#";
};
};